Slush pump valve and the like



` w. A. ABEGG Filed sept. 30, 1955 INVENTOR AoR/VEY SLUSH `PUMP VALVE ANDTHE LIKE ocr. 4, 193s.

IIIII f Patented .f

Walter isinvention relates to valvesi'forslush pumpsV Aand `fthe like Tandis i a continuationin part ofl my i i patent entitled'iiillalve for slush. pumps and the i like?. No.amasivigrantedMay 11,1937. i

i r often rofabrasive character and which will with- 1. stand pressure `of .these `fluids and `their abrasive 19" actionytvis` also desirable toprovidelthese valves fcorneto its seat after-having been raised to thus .1. `forrrrari eiective seal-andthatthe valve will operi ate ina simple `manner-without the-,use offcom- `present invention; therefore, pump valve which is simple in character; decided- 1- ly rugged in construction and willinsure that al l .maximum sealing actlonwillzbe obtained and that 1 the valve will readily aline itself .and assume a `proper sealing positionupontitsfseat whenpres- ",sure is` relieved from beneath it. 1 i

i The present invention i easily, may' thereafter aline itself properly land, as-

gsume a sealing position uponitsseat.l

The invention is illustrated byiwayof example A 3Q inthe accompanying drawing inwhich: .S i

. I.Fig. ligis aiview in transverse sectionon the line I+I- through `.thevalveistructure as shown Fig. 2 is` aview in plan showing -thevalve struc- 35ture in'positioriv upon aportion of the valve, or

f `cylinder -housingfindicated in. the afragmentary .rna'nnfel- Y i M i Fig. y3 is a viewin transverse section` through another iormof.; the valvestructurezyvith which' 40.thelpresentdnventionis concerned. t

lFig..4 is an enlargedfragmentary section showi "ij ingthe detailedconstruction of the ivalve seat, the

" valve member ina partially sealed position there# onandi the'formation of the meeting faces oi the .i p "Referring more `liuti'ipicularly to the drawing, "I0

i 50 indicates awaugoi the pump strueturehaying a tubular valve seat Thefbore may be tapered' lto form` .1. bore` il i ftnerei "toi receive a bushing I2.'

` lasuitable Milt" withthel valve seat, bushing more ".ireadily,` or thevalve seat bushing lmaybe se- .icured by other conventionalfmeans. "A relatively n. Ariege; Los AgeiesQoaiifLfass'ign' of L "fone-nali" tofjraldwn Reinhold,- Angeles,

ila `structure insuring that the 'valve will' always ,2i when' properly ground `togetherwill form a tight seat and seal irrespective ofthe fact that the valve disk` might rotate laterally with relation rto contemplates Athe .p1-0- i itsseat. Above the plane of largest diameter of i vision ofY a valve seat upon" which a valve element t 35 `of idesired L character Y,and structure is :I freely mountedso Lthatit may be `lifteclifrom its :seat

loccurs.; Thecircumferentialedge of this portion .tapers .upwardly andinwardly as indicated atf23', l thetop, faceof lthe disk beingtlat."Y The valvedisk is; preferablymade of a' suitable, high-grade steel upon the upwardly protrudingiport'ion` 22 of the disk 20 isa non-metallic packing disk 24, preferi iormed with avcenter circular 4recess 25 of a depth ofslightly greater depth thanthatof thelportion 22 of ,theyalve disk V2li.` The recessii's bounded .terminates in ra flat face I Ii whichabuts against face I5 of the valvey ,seat.,.ittention,` however', is directed to the fact that the angle .of the face t e t. .t `videafclearance space which will permit some Fig. v'5 is a` `fragnientary t view in `vertical section g'th alve `structure oi Fig. l with ataper: i

lSP'AT-EN'T"QFFICE' Aliplicationseptenxber 3b, `Serial No.l`42,85'l (rolaiiit '(i. 25141271 p large center passageway Il isformed through the' valve seatbushing I2L`This passageway is reprei sentedbya straight bore, the upper opened end of j "f which terminates in a spheroidal seating surface I4` struck `from a lcenter lgenerally indicated by 4.5

the `dotted radius linea in Fig. 1'. The upper face of` the valve seat I2 isinia plane'atright angles to the longitudinal axis ofthe bor'efl 3` Aand preferably is `.formed with a'ffiat'face I5. `Avalve`fd,is'k 2011s provided to assume a `seated positionfupon over-all diameter' agreeingiwith the ldiameter of e the upper terminating edge ofthe seating lface |4.

. Itsvunderface 2I is spheroidalandrepresents a if. plicatedparts.` `It is the principal olijectoi` the `to provide a slush segment cfa sphere, theI radiusofw'hich is indi- 215 cated by the dotted line ain Figlil sothata down` I4. It will thusbe evident that the faces I4 and the valve diskanupwardly protruding portion 22 and is ground to fitthe seatingface I4. Mounted ably constructed ofl rubber, or other suitable materiaLj The bottom face` ef` the packing disk 24 is by an `'outwardly and` downwardly'tapered cir reumiferential wall" 26 which circuinscribes` the beveled face23 ofthefvalve disk portion 22 rand 26 is wider than thefan'gle ofthe face 23 to pro- 4:5 flexibility `of the ilipf 28 whichprojects downjwardlyfrom the packing disk 24-as formed by the @recess 25. Thebottom face'Iv ofthe lip 28, as e particularly indicated atFigI 4 ofthe drawing.

will when compressedagainst the end surface I5 ofthefvalve seat bushing I2 prior to` the seating yof the' surfaces I4 and 2l` increase the sealing efilciencyof the valve. i Mounted above the packing disk 24, as shown in Fig. lof the drawing, is a guide `cap 29. yThis `cap is formed with an `10 Vthe spheroidalseatingface I4. Thlsdisk has van `the top opening 35.

annular anse 30. The outer face of the annular flange 30, as indicated at I9 in Fig. 4, is spheroidal and is described by an arc representing the radius of the extreme diameter of the disk, the radius being indicated at b in Fig. 1 ofthe drawing, and the arc being indicated at c. The radius of the arc described also represents the radius of the inside cage 3| within .which the valve structure is housed. The valve disk 20, the packing disk 24, and the guide cap 29 are secured in assembled relation to each other by cap screws which pass through openings inthe guide cap 29 and the packing disk 24 and are threaded into the valve member 20. Spacing bushings 32 extend through the guide cap and the packing disk and receive the cap screws. is possible to securelyA fasten the spacing disk 20 and the guide cap together without unduly compressing the body ofthe packing disk 24, and

while preventing any resilient action ofthe packing disk 24 from tending to aid thecap screws in working loose. The cage 3| is formed with a cylindrical wall 33, and is threaded at its lower end to engage complementary. threads around the upper vedge oi' the. valve bushing I2. The upper end of the cage is substantially open save foran inturned marginal fiange 34 which forms At suitable points lon this ange recesses 3B are cut to receive .a wrench by which the cage may be screwed into position or removed therefrom. vThe inturned `flange 34 limits the upward movement of theassembled valve unitwhile permitting it' t'o be raised from Y its seat a sufficient distance to uncover ports formed through the side wall 33 of the cage. Attention is also directed to thefact'that this flange provides a peripheral stop which will'tend to bring thevalve unit toa normally alined posision when the pressure beneath the valve forces the guide cap 29 upwardly against the ilange 34, it being understood that the spheroidal'face 9 of the guide cap 29 makes it possible for this cap to become tilted in any manner as brought about by the pressure of the fluid unit, but that after this tilting motion the circumferential flange. 34'v will aline, the valve so that it will fall directly upon its seat..

In the formof the device shown in Fig. l the valve returns to its seat by gravity. In the form of the device shown in Fig. 3 the valve unit is returned to its seat by a spring 31. Referring particularly to Fig. 3 of the drawing it will be seen that a valve disk 38 is provided to the `beveled seat 3i! of the. vvalve bushingv 40. Within the valve disk 39 is a packing'element 4| having a down turned nange portion 42 which rests against a face. 43 at the end of the valve bushing and supplements the sealing action of the disk. A guide cap 44 is here shown differing from the guide cap 29 previously generally described in that while the down turned flange 30 of guide cap 29 circumscribes and conforms to the circumference of the packing disk 24, in this particular case a guide ilange 45 wardly. This flange is formed with the spheroidal face i9 previously described tending to guide the valve element within the cage .46 while allowing it to have free tilting motion as it moves.

In Fig. 3 the valve disk 38 is shownv as having an upwardly projecting center pin 4l which extends through the packing disk 4| and the guide cap 44. A cotter pin 48 passing through the pin 4l holds' the valve element in its assembled position. Mounted in the upper Wall 50 of the valve diameter of a cylindrical Valve and also to Fig. 1. but with By this arrangement it yThese screws are preferably held by ation will be substantially the same.

beneath the valve' provides seat upon f lguide pins and thus place extends upi vWhile I haveshown the .stood that various changes lbination, construction, and

cage 4I shown in Fig. 3 is a thimble Il receiving a snubber plunger 52 which is formed with a shank 53 carrying a nut 54 at its upper end. Around the plunger and within thethimble 5| is a spring 55 which resists extreme upward movement ot the center pin 41 and cooperates with the spring 31 intending to resist hammering action oi' the restore the valve to a normal alined position as it returns to its seat.

Fig. 5 shows a structure of the type shown in the valve disk formed with a beveled face 'as in Fig. 3.

In operation of the form of the invention shown shown. The .valve 'unit' is also assembled and held in assembled position by the capI screws.

56 to prevent them from loosening. sure of uid is exerted against the under spheroid face of the vvalvev disk 2l, it will rise as guided the cage 34. Due, however, tothe spheroidal face |901' the guide cap 29 the valve unit may freely tilt ai:v various anglesl to the horizontal. The valve unit will then move upwardly and will irst encounter the circumferential flange 34 of the cage at the highest edge of the disk, after which the pressure beneath the valve unit'will force the guide cap 29 'into alinement with the entire circumference of the flange 34 so that whenthe pressure is relievedffrom beneath the valve unit, it will drop freely on to its seat. In so doing the valve may become slightly displaced from its alined position; nevertheless, the spheroidal convex face 2| of the valve disk 20 will engage and -seat upon theseating face |4 of the valve` bushing I2.. 4'Iheend face I6 of flange 23 of the packing disk 24 will come to seat as itv en- Y gages the end face i5 of the valve bushing |2 and priorto the time that the faces 2| and |4 finally seat.- 'Ihe Dackingmember 24 will thus be compressed forcibly on to the seat I5.v In the form of the invention shown in Fig. 3 the oper- In this form of the structure, however, springs will tend to assistthe gravity movement oi' the valve and the upward movement `of the valve will be resisted by the springs and the force of'impact will Vbe yieldably snubbed.

It will thus be seen that vthis valve'structure a freely moving valve element conilned in movement by the cage only without the use of It will also be evident that due to this arrangementthe full area of the central bore through the valve bushings will be clear. It is not necessary tc provide the path of the-abrasive parts and excessive wear ot'them, and it will,

ically aline itself at the top of its stroke and will readily come to its seat con'fomiing.A thereto so that its metallic valve surfaces and non-metallic valve surfaces may form an effective Vfluid seal.

preferred form of my invention as now known to me,it will be undermay be made in comarrangement of parts by those skilledin the rart, without departing from the spirit of my invention as claimed.

further, be apparent thatthe valve will automat--A n t Imaam t `Having thus describedmy inventionfvvhat I claim and desire to secure by Letters Patent` is:

A valve vstructure comprising a valve seatvhaving a at annular face in a'horizontal plane, a

`downwardly and' inwardly spheroidal face circumscrbed "by said at face, a valve element t freely mountedfor vertical movement with rela- 1 tion to said valve seat, saidelement comprising a dischaving a spheroidal face on its under side, said spheroidal face being adapted to seat upon the spheroidal face of said `valve seat, a non- "metallic packing disc mounted upon the upper face of the valve member and havinga circumferentiaI flange extending around the periphery of the valve member, said fiangebeing adapted to `seat upon the `flat face of said valve seat, la"

guide cap mounted above said non-metallic packing disc and being formed with an annular flange,`

the outer faceof said annular flange being" spheroidal, meanssecuring said guide cap, pack-y ing disc and valve member in assembled relation;`

the two seat faces of the valve seat and thefaces y of the valve element bearing such relation to each other as to insure that the nonmetallic portion shall contact the annular valve. seat and be com tallic inclined faces of the valve and .its seat,` and means cooperating with the spheroidal flange to guide the valve vertically. t

. v WALTER A. ABEGG.

l10` t pressed thereagainst prior to contact of the me 

